function formatTime(date) {
  var year = date.getFullYear()
  var month = date.getMonth() + 1
  var day = date.getDate()

  var hour = date.getHours()
  var minute = date.getMinutes()
  var second = date.getSeconds()


  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

function formatNumber(n) {
  n = n.toString()
  return n[1] ? n : '0' + n
}

function convertRangeArray(start, end) {
  var result = [];
  if (start > end) {
    for (var i = start; i >= end; i--) {
      result.push(i);
    }
  } else {
    for (var i = start; i <= end; i++) {
      result.push(i);
    }
  }
  
  return result;
}

module.exports = {
  formatTime: formatTime,
  convertRangeArray: convertRangeArray
}
